      <ul class="nav navbar-nav clearfix hidden-xs " id="nav">
        <li class=""> <a href="/course" >选课中心 </a> </li>
        ${dingbudaohangtihuan}
      </ul>
      <div class="navbar-user  left ">
        <ul class="nav user-nav">
${topusernav}
        </ul>
        <form class="navbar-form navbar-right hidden-xs hidden-sm" action="/search" method="get">
          <div class="form-group">
            <input class="form-control js-search" value="${remensousuo}" name="q" placeholder="${remensousuo}" >
            <button class="button es-icon es-icon-search"></button>
          </div>
        </form>
      </div>